Re: [Chrysler300] Electric Fuel Pump -'63 300

[2HsandaHeritage@xxxxxxxxxxx]

Hi Mark, 



You might try a glass fuel filter that should be available at any parts store. 

Also make sure that the fuel line from the fuel pump is not touching or too close to the engine. 



Doug Warrener 

Fair Oaks, CA 

300H  


----- Original Message ----- 
From: "Mark Lindahl" <mplindahl@xxxxxxxxxxxxx> 
To: chrysler300@xxxxxxxxxxxxxxx 
Sent: Thursday, June 18, 2009 4:45:51 PM GMT -08:00 US/Canada Pacific 
Subject: Re: [Chrysler300] Electric Fuel Pump -'63 300 








Hi All, 

I found that the metal fuel filter was getting hot next to the hot air cleaner. Perhaps the plastic ones may work better? 
This caused (in theory) the gas to expand and I watched gas pouring into the carb, after the engine was shut off and very hot. 
When the fuel hit the throttle plates, it was boiling and causing a major smell of gas. 

I removed the fuel filter and the problem mostly went away. 
Is it OK to relocate the fuel filter in the rubber hose, just before the fuel pump? 

I can hear the fuel in the bowl bubbling away, just like an old coffee maker, and this is also part of the problem. 
Also, when I added the AFB 3256 and new intake manifold, I removed the 'insulation blanket' in the intake well. 
I thought that this insulation may actually hurt the initial warm up of the engine vs. keeping the carb cooler when the engine is hot. 

Has anyone ever stuffed household insulation under a 4 bbl manifold to keep the heat off the carb? 
This was my latest idea, but maybe the 'factory insulation blanket' may do a better job? 
Let me know your comments. 

Thanks, 
Mark Lindahl 
'63 300 Conv. 

P.S. With the fuel filter removed, the engine still is gasping for fuel during idle, but only after the fuel seems to boil away. 
After a few minutes of driving, the engine/carb runs fine at idle and at high speed. 

----- Original Message ----- 
From: Mark Lindahl 
To: chrysler300@xxxxxxxxxxxxxxx 
Sent: Wednesday, May 20, 2009 2:37 PM 
Subject: [Chrysler300] Electric Fuel Pump -'63 300 

Hi All, 

I have a AFB 3256SA on a 383 and I find that after the engine gets hot, is shut off, and then sits for a while, there is some flooding from the carb. This seems to be seems to be common on most of this vintage Chrysler. I have replaced the needle/seat and it seems the problem is cured slightly, but not entirely. 

When I hold the throttle wide open, crank the engine, it seems to start after a few spins. 

Here is the problem- When the engine starts, it runs great at high idle, but after taking my foot off the pedal, the engine stumbles at low idle. I assume this is due to the mechanical fuel pump trying to fill the bowl in the carb and there may not be sufficient fuel in the carb to allow the engine to idle properly? 

After a few minutes of driving, the idle is fine, but once in a while it dies at low idle. 
When the engine is cold, there are no problems since the choke is partially on. 
At high cruising speeds, there is no problem. 

Will an electric fuel pump solve this problem? 
If so, what is a good one to buy and how much should I spend to get a decent one? 

Lastly, I assume if the electric fuel pump is used, the old mechanical pump remains in the engine, but is it common to remove the push rod? 

Thanks, 
Mark Lindahl 
'63 300 Conv. 


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